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73 Magazine (Amateur Radio Today)

73 Magazine (also known as 73 Amateur Radio Today) (OCLC 22239204) was a United States-based amateur radio magazine that was published from 1960 to 2003. It was known for its strong emphasis on technical articles and for the lengthy editorials in each issue by its founder and publisher, Wayne Green. The magazine title, 73, means "best regards" in amateur radio lingo. Green, a former editor of CQ Amateur Radio magazine, published the first issue of 73 in October 1960.

At that time, the magazine was headquartered in Brooklyn, New York. Among contributing editors was author and radio personality Jean Shepherd, K2ORS. The magazine was a pioneer promoter of SSB, FM, solid-state, easy construction projects, and the marriage of personal computing and amateur radio. His interest in microcomputing led Green to found several of the early personal computing magazines, including "Desktop Computing", Kilobaud Microcomputing, and 80 Micro, among others. Green was involved in the founding of Byte Magazine, another early and influential microcomputer magazine, later published by his wife, Virginia Londner Green. Since the summer of 1962, 73 was based in Peterborough, New Hampshire. At the peak of its popularity in the 1970s and 1980s, individual issues of 73 totaled more than 300 pages of advertisements, articles and commentary. Heading each issue was Green's editorial column, "Never Say Die", in which he often criticized the American Radio Relay League and his magazine's competitors for their perceived shortcomings. The title "Never Say Die" was a backronym for Green's amateur radio call sign, W2NSD.

After completing 43 years of publication, 73 Amateur Radio Today magazine ceased publication in October 2003. Publisher Wayne Green cited financial pressure from reduced advertising revenue as the prime reason for shutting down publication of the magazine.

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493
amateur radio
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power supply
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448
amateur
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wayne green
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73 Magazine (Amateur Radio Today)
Dec 1, 1965
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73 Magazine December 1965 (#63) Solid-State 432 Exciter - Puts out 8 watts on 432 MHz. A ham scoop ...... W9SEK 6 8058 Nuvistor Preamp for 432 MHz - Complete plans and layouts ...... I1L0V 10 UHF-VHF Dipper - 50 to 500 MHz with no work ...... WA1CCH 11 Transistorized FSM - Printed circuit board available for this one ...... W1JJL 14 Ham Christmas Gifts - Ho, ho, ho! It's that time again ...... 16 RF Measurements - Build a Q-meter and impedance bridge ...... K5JKX 20 A New Two Meter Heterodyne...
Topics: tlie, voltage, meter, antenna, circuit, frequency, transistor, output, watts, power, power supply,...
73 Magazine (Amateur Radio Today)
Nov 1, 1965
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73 Magazine November 1965 (#62) We Got Across! - Catching up with the past: No.3 ...... W2AAA 6 An Audio-TV Transmitter - Broadcast sound and video on the same carrier ...... W8VCO 14 Hybrid Phone Patch - Of course, we don't really approve of phone patches ...... KH6IJ 18 A Coax Antenna for Twenty - Or fifteen or ten ...... W2NQS 20 Six Solid Watts an 160 - We keep telling you that tubes are obsolete ...... K9IAH 22 Half-Rack Panels - Sure beats those orange crates for mounting ...... W2DXH 26...
Topics: tlie, antenna, meter, frequency, oscillator, amateur, ssb, receiver, power, circuit, watts pep,...
73 Magazine (Amateur Radio Today)
Oct 1, 1965
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73 Magazine October 1965 (#61) 2 kW Mobile - PEP, of course ...... W2DMK 6 Meterama - Get some good use from those old air-speed indicators ...... W5GWF 12 Six for Six - Six elements for six meters ...... WB2CQM 18 A State-of-the-Art Converter - Integrated circuitry comes to hamdom ...... W3HIX 22 Hamfest Out on a Limb - A little step toward international hamming ...... Margolis 26 Are 20 Cent Transistors Coming? - Apparently so ...... W7SMC 30 The Lowly Coax Fitting - A little picture article...
Topics: meter, tlie, output, voltage, power, frequency, transmitter, watts, volt, watt, power supply, full...
73 Magazine (Amateur Radio Today)
Sep 1, 1965
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73 Magazine September 1965 (#60) Der Kleiner Keyer ...... WB2KPE 6 QRM on 432! ...... W2NSD/KP4 14 Practical Meteor Scatter ...... K1CER 20 A Simple DX Antenna ...... W6WAW 24 The Ultimate in Transmitter Control ...... WB2CCM 28 DSB Circuits ...... W6TKA 34 The Zorch-Proof Connector ...... W4WKM 36 An One Filament Transformer Bridge ...... W5NGX 38 The Cheap SWR Bridge ...... WIJJL 42 Simplified Tuning for the Drake 2B ...... W7ZC 44 W2NSD in Hungary ...... W2NSD 46 Two Meter Transmitting...
Topics: tlie, circuit, voltage, meter, oscillator, antenna, power, frequency, output, transmitter, power...
73 Magazine (Amateur Radio Today)
Aug 1, 1965
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73 Magazine August 1965 (#59) This One Sounds Good - Like a Transmitter Should - A fancy name for an article about a 20 watt six meter AM transmitter ...... W2BHT 6 Going RTTY: Part 3 - The scope monitor ...... W4RWM 12 Imagineering With Meters - Put those miscellaneous meters to good use ...... W8BPY 14 The EHS Portable Dipole - Works from 80 to 6 ...... W9FQN 16 Some Notes on Grounded-Grid Linear Amplifiers - And some interesting ideas in a 8072 linear ...... K4ZZV 18 Simplified Solid-State -...
Topics: antenna, meter, tlie, diode, receiver, power, tuning, signal, circuit, ham, power supply, noise...
73 Magazine (Amateur Radio Today)
Jul 1, 1965
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73 Magazine July 1965 (#58) A Two Meter Transistor Transceiver - To give you a little encouragement to go portable on VHF ...... I1SLO 6 A Simple Two Meter Collinear - Build your own CushCraft collinear ...... W5GVE 14 220 Converter Number 9 - The last tube converter Hank built, but a good one ...... W1OOP 18 Reviewing the CushCraft Squalo - It works ...... WA2ZCH 20 Push-Pull 5763s on 144 - You might call it a forest of 5763s ...... WA6VTL 24 2C39 Amplifier for 1296 MHz - Get yourself a...
Topics: meter, antenna, receiver, vhf, transceiver, tlie, code, plate, coil, inch, cipher group, wire...
73 Magazine (Amateur Radio Today)
Jun 1, 1965
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73 Magazine June 1965 (#57) A VFO With FSK Provisions - A stable VFO for the SSB-RTTY man ...... W6TKA 18 Shoulder Strap Portable - An easy-to-build 6 meter rig for portable operation ...... K1CLL 22 Superimposing 6 Meters on Your Tri-Bander - The ideal match for a transmitting converter ...... W4API 25 The Waters Cadax - A very fine all-purpose electronic key ...... WA2TDH 26 73 Tests the Henry 2K Linear - An Imperial Gallon ...... W2NSD/1 28 Gus, Part 2 - In which a country boy from South...
Topics: receiver, power, frequency, meter, amateur, antenna, volt, volts, tube, output, power supply,...
73 Magazine (Amateur Radio Today)
May 1, 1965
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73 Magazine May 1965 (#56) 432 MHz Converter - Easy-to-build converter to get you on 70 cm ...... K6MIO 6 A New Approach to Phasing - Not all SSB transmitters use filters, you know ...... W8HXA 12 The Big Bomb - Runs a gentleman's gallon ...... W0SYK 18 Two for Two - Some antennas for our western hams ...... W6TKA 22 The Trouble with Fred - A fetching tale illustrated by K3SUK ...... Margolis 26 A Versatile Oscilloscope - Every ham needs a scope. This one does a lot, but doesn't cost it .........
Topics: antenna, amateur, receiver, meter, radio, watts, frequency, power, ssb, ham, amateur radio, power...
73 Magazine (Amateur Radio Today)
Apr 1, 1965
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73 Magazine April 1965 (#55) Europe on Two? - Get ready for Oscar III ...... W7SMC/6 3 Letter from Gus - Beginning 73's monthly letter from the DX King ...... W4BPD/AC5H 4 1 kW PEP - 811's in a small box ...... W9EWL/0 6 6 Meter Heterodyne VFO Transmitter - A simple, stable, easy-to-build transmitter from Bill ...... K1CLL 10 Kostless Keyer - Well, maybe not kostless, but klose to it ...... W8MQW 14 Double Hula - A small new antenna. Looks like a halo, but good for HF ...... K2ICF/6 16...
Topics: meter, tlie, frequency, transceiver, ssb, antenna, crystal, receiver, amateur, power, power supply,...
73 Magazine (Amateur Radio Today)
Mar 1, 1965
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73 Magazine March 1965 (#54) Dual VHF Converter - Combination 144/220 MHz Nuvistor converter ...... W9DUT 8 Two-Band Collinear Antenna - For 40 and 15 meters, by George ...... W7CSD 10 The Parametric-Transistor Multiplier - A new development in electronics of great interest, no doubt ...... W6GXN, W6QUD 12 Improving the Garden City TU - Don't let the title fool you; it's a complete TU, whatever that is ...... W7CJB 16 The Ham - Don't miss this one. It hurts. Illustrated by K3SUK ...... Pirolo...
Topics: antenna, circuit, meter, output, frequency, voltage, coil, input, receiver, tube, power supply,...
73 Magazine (Amateur Radio Today)
Feb 1, 1965
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73 Magazine February 1965 (#53) The Ham and TVI - With clever cartoons by K3SUK ...... WA6OQP 6 Coffee Can VXO for Oscar III - Be ready for QSO's to Europe on two ...... W7SMC6, W6HEK 10 Transistor, Hi, Hi - A few interesting notes on Nipponese transistors ...... K6QKL/ KH6 11 Multiband Vertical Antenna - A simple high-frequency antenna for hams with space problems ...... W3UWV 12 Let's Go Ham TV - The details of getting on the air ...... K3DSM 18 Solid-State SSB Power Supply - With same vital...
Topics: power, meter, antenna, voltage, receiver, amateur, output, crystal, frequency, radio, power supply,...
73 Magazine (Amateur Radio Today)
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73 Magazine January 1965 (#52) 120 Watts Mobile on Two - With a well-modulated 5894 ...... K5JKX 6 AM, the Ham and Transistors - It's not too easy to get linear modulation with transistors ...... Geisler 12 Diode Controlled Break-In - A very clever scheme for easy clean switching ...... VE2AUB/W5 16 Calibration and How to Get It - By one of the greatest hams ...... K6BJ 22 Tuned Feeders Forever - Nasty black snake ...... W5DWT 24 Pegboard Panacea - Clean up your messy workshop ...... K6UGT 27...
Topics: meter, receiver, antenna, power, transistor, voltage, circuit, output, model, grid, power supply,...
73 Magazine (Amateur Radio Today)
Dec 1, 1964
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73 Magazine December 1964 (#51) SSB Mobile Receiver - Lots of nice ideas in this one ...... W3ZFJ 6 Cheap Pair of Socks - Simple linear using inexpensive new tube ...... W6NKZ 10 28 Volt Supply - 10 amps at 28 volts for $10 ...... K6VNT 12 Weather Detector - Don't let a tornado suck you up ...... K5JKX 14 14 Elements on 432 - Simple yagi for 70 cm ...... K1CLL 16 Miniature Multiband Tuner - Very clever and useful ...... W6SFM 18 Bamboo Birdcage - Thanks to G4ZU and the boomless Quad ......W6WAW...
Topics: model, frequency, antenna, meter, tlie, power, voltage, receiver, circuit, crystal, power supply,...
73 Magazine (Amateur Radio Today)
Nov 1, 1964
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73 Magazine November 1964 (#50) VHF Log Periodic Beam ...... VE3AHU 6 SSB VFO ...... K9ALD 10 Color the Grommet Gone ...... K7IDF 12 Cartoon ...... Rogers 14 Tuneable Antenna for 432 ...... K1CLL 16 On the Air on 432 ...... K1CLL 18 Precision Audio Attenuator ...... K9QYI 22 6 Meter VFO Transmitter ...... WA2GCF 24 Sterba Curtain for Two ...... W2ZBS 30 Electrolytic Saver ...... W0HMK 31 KWM-2 Voltage Regulator ...... WA4NXC 33 80-40 Vertical ...... WB2CQM 34 Transistor AFSK ...... K9MLD 36 2...
Topics: amateur, antenna, frequency, meter, output, voltage, radio, receiver, crystal, power, amateur...
73 Magazine (Amateur Radio Today)
Oct 1, 1964
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73 Magazine October 1964 (#49) A Ham In the White House? ...... K3SUK 6 Compact Full Size 20 Meter Beam ..... W3PMV 10 160 Meter Transmitter ...... W4MLE 13 432 MHz Pre-Amp ...... K6MIO 18 The SJS Receiver, Part 2 ..... K5JKX 26 The P&H 2-150 ...... K6LOP 30 The 432'er Transmitter RF Section ...... K1CLL 32 The 432'er Modulator ...... KlCLL 44 The HP-23 Powers the Swan 100 ...... K6LOP 47 Modulated Calibration Oscillator ...... Ives 48 Ten'er to Six ...... K6GKU 51 Varactor Tripler to 432...
Topics: meter, noise, receiver, signal, oscillator, output, antenna, crystal, power, plate, noise figure,...
73 Magazine (Amateur Radio Today)
Sep 1, 1964
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73 Magazine September 1964 (#48) Linears for the Two'er ...... K1CLL 6 Linear for the Sixer ...... K1CLL 11 Portable Six Meter Station ...... W1OOP 16 Now That You Ask Me ...... W7IDF 29 More on the 6DQ5 ...... K5JKX 32 SJS Receiver ...... K5JKX 34 Another Antenna of Note ...... W2RWJ 40 Tuned Line Tank Circuits ...... WA4EPY 42 Six the Easy Way ......WA9CZQ 50 Simple Squelch ...... K5JKX 53 Souping the TCS ...... K7CJJ 54 Varicap Phase Modulator ...... W7CSD 56 Friendly Silicon Rectifiers...
Topics: tlie, meter, receiver, voltage, frequency, capacitor, power, tuning, circuit, antenna, power...
73 Magazine (Amateur Radio Today)
Aug 1, 1964
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73 Magazine August 1964 (#47) Two-Band Transistor Transmitter ...... QZ7BQ 6 Two Meter Transistor Receiver ...... K6TOV 14 Stripping Transistor Radios ...... K8YCH 20 UHF Beacon ...... W6GGV 22 Squelch for Transistor Receivers ...... Geisler 28 Those Fragile Transistors ...... K4CPR 29 Transistor AM-FM VFO ... WA0HQA 30 Transistor Final for Forty ......W0TKX 34 Minute kW Power Supply .... K8IKA 40 The Signal Helper ...... W3WJN 44 Transistorized Receiver ...... Morgan 46 Simplified Transistor...
Topics: transistor, voltage, receiver, emitter, tlie, collector, amateur, circuit, frequency, output, power...
73 Magazine (Amateur Radio Today)
Jul 1, 1964
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73 Magazine July 1964 (#46) The 432'er: Outboard RF Stage ...... K1CLL 8 The 432'er: RF Amplifier ...... K1CLL 10 The 432'er: Tuned Trough Line Mixer ...... K1CLL 14 The 432'er: Local Oscillator Chain ...... K1CLL 16 The 432'er: First Evening of Listening on 432 ...... K1CLL 20 The BH-2 ...... K5JKX 22 2300 MHz Wavemeter ...... K7YJF 26 VHF Tunable Oscillators ...... K0CZD 36 Six Meter VFO ...... WA6CDO 42 VHF Yagis from TV Antennas ...... W6TKA 44 Semiconductor Schmaltz ..... Kidder 50 The...
Topics: meter, amateur, rec, power, antenna, radio, watts, arrl, xmtr, receiver, amateur radio, power...
73 Magazine (Amateur Radio Today)
Jun 1, 1964
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73 Magazine June 1964 (#45) T-51/ARQ-8: 6 Meter AM and SSB Transmitter ...... W5AJG 6 Nickel Cadmium Storage Batterys ...... W4VGS 14 ARB Aircraft Receiver...... W1MEG 16 ARR-1: Adding SSB ...... W6BHR 18 TV-10/A: 220 MHz Transverter ...... W5AJG 20 ARR-15 ...... W1MEG 24 R44/ARR-5 Receiver ...... Ives 26 Surplus Find ...... Gardiner 30 Propagation ...... Nelson 31 Really High Gain ...... K5JKX 33 Smaltz for Semiconductors ...... Kidder 34 Surplus Circuit Breakers ...... Pafenberg 39...
Topics: output, voltage, power, receiver, tube, tlie, frequency, meter, volts, supply, power supply,...
73 Magazine (Amateur Radio Today)
May 1, 1964
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73 Magazine May 1964 (#44) Flying Noise Lock ...... K2TKN 6 Matching VHF Antennas ...... K5JKX 12 Where Have Our Bands Gone? ...... W2DUD 16 The Quad-Quad - for two ...... W8HHS 20 Class D Amplifier - introducing a new type of audio circuit for transistors ...... K5JKX 26 12 Volts from 6 ...... K6BIJ 32 Single Tube Oscillator-Multiplier ...... K5JKX 34 SSB, DSB, AM, etc. ...... K6HJH 36 Inboard Calibrator for the NCX-3 ...... WB2MAH 42 Push-to-Talk for the HT-37 ...... W2ZBS 46 Gardner...
Topics: amateur, antenna, power, receiver, frequency, transmitter, arrl, output, circuit, watts, amateur...
73 Magazine (Amateur Radio Today)
Apr 1, 1964
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73 Magazine April 1964 (#43) Los Angeles Six Meter Repeater ...... K6VWM 6 1296 MHz RF Pre-Amp ...... I1LOV 14 Our Man in Washington ...... W2DUD 18 Under the Noise ...... W2NSD/1 20 The Hallicrafter's SR-160 - a readers look ...... W8GTT 24 An Armstrong Sweeper ...... W2EMF 26 The Man-Key ..... WA60HD 28 IF Spotter ...... W5WGF 34 The Naughty Pi-Net - why is misbehaves ...... K5JKX 38 60 Watts on 75 ...... VE1IC 42 Pushbutton Control ...... K5JIC 48 Waveguide Simplified ...... K5JKX 52 New...
Topics: voltage, receiver, frequency, power, circuit, transmitter, output, antenna, radio, meter, power...
73 Magazine (Amateur Radio Today)
Mar 1, 1964
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73 Magazine March 1964 (#42) The Little Punch on VHF ...... K5JKX 6 Transistorized RTTY Converter ...... W1JJL 14 Modulation Measurement - the simple way ...... K5JKX 16 144 MHz Transistorized Converter - high performance ...... W3HIX 18 Biasing Tubes ...... W2BDG 20 Six Meter Transistor Receiver ...... W5JSN 22 Speech Compression for Mobile ...... W7SMC 28 Mobile Power Supply ...... K6BIJ 30 Neatness Does Count ...... WA2BWG 32 3/4 Meter TV ...... K2OPI 35 Swan Transceiver Modifications - AGC...
Topics: amateur, circuit, power, meter, radio, receiver, output, ham, frequency, transistor, power supply,...
73 Magazine (Amateur Radio Today)
Feb 1, 1964
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73 Magazine February 1964 (#41) Two Meter SSB Rig - employing novel features ......WA2IKL 6 Heath Warrior Tip ...... W2DOR 12 Simplified Receiver Design - become an instant expert ...... WA2INM 14 Making an AC Capacitor ...... K5JKX 23 Heat Dissipating Tube Shields ...... K2ENN 24 More on the Magic TR Switch ...... K5JKX 23 Miniture AM Tuner - transistorized broadcast tuner ...... K6AI 30 Loud Speakers and Enclosures - for phone ...... W1JKX 28 Transistor CW Transmitter - 2 Watt, 7 MHz .........
Topics: amateur, frequency, receiver, antenna, transmitter, circuit, power, radio, meter, arrl, amateur...
73 Magazine (Amateur Radio Today)
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73 Magazine January 1964 (#40) Transistorized Receiver - High Quality ...... W3HKX 18 Receiver Deceiver ...... W2RWJ 30 Let's Keep it Simple ...... VE2AUB/W5 36 Going RITTY ...... W4RWM 39 Well Grounded ...... K4ZGM 42 The Beginning ...... W1KSZ 52 How Good is Your Receiver ...... WA4EPY 55 Effective Filtering - Or shut that thing off! ...... W2OZY 58 Two-Element Phased Array ...... W7RTP 60 Europe on $2000 a Day ...... W2NSD/1 64 Heath HW-22 - 40 meter SSB transceiver ...... WA2TDH 74...
Topics: amateur, receiver, antenna, radio, frequency, transistor, power, meter, amateurs, transmitter,...
73 Magazine (Amateur Radio Today)
Dec 1, 1963
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73 Magazine December 1963 (#39) Some Guys Make It - And then there's us ...... K2ORS 6 QRP Kilowatt ...... WA4DQS 8 50 MHz DSB - A novel approach ...... Unknown 16 Six Meter Transceiver ...... WA2INM 11 VHF Contest Special - A dissertation on the use of the Corner Reflector on 144 MHz ...... K9SGZ 20 The VR Tube ...... Lyman 24 432 MHz Exciter - From the ARC-27 RF Subassembly ...... W5AJG 32 Cartoon ...... W5IMJ 38 Sideband Linears ...... Staff 42 Barney and the ZDO ...... Margolis 46 Antenna...
Topics: antenna, receiver, voltage, meter, power, amateur, tube, radio, circuit, transmitter, power supply,...
73 Magazine (Amateur Radio Today)
Nov 1, 1963
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73 Magazine November 1963 (#38) Another Approach to TVI - Harmonic Reduction ...... K5JKX 8 432 MHz Converter - Using the Navy surplus CFN-46ADT ...... W5AJG 16 The Perfect Match ...... VE3DGV 24 SWR/PWR Meters ...... W2KPE 28 All-Band Conical Antenna ...... W5VOH 32 Tool and Workshop Section ...... W2RWJ 40 AC Adaptor ...... W5KKB 42 Come-a-Longs ...... K4FQU 44 Of RTTY - And the TUZ terminal unit ...... W3TUZ 48 73 Tests the Hallicrafters SK-140K ...... W3UZN 62 The Amateur's Cope Canaveral...
Topics: tlie, amateur, radio, power, antenna, frequency, meter, ham, receiver, transmitter, amateur radio,...
73 Magazine (Amateur Radio Today)
Oct 1, 1963
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73 Magazine October 1963 (#37) Do-it-Yourself WBFM Transceiver ...... K5JKX 8 Why Johnny Ham Can't Hear - (with apologies to Rudolph Flesch) ...... W6VAT 12 Why Fight Ohm's Law? ...... K5HPT 16 Tri-Element Remotely Tuned Yagi ...... WB2CQM 22 Rules of Thumb - Or How to Get in the Ballpark and Stay ...... W5IUR 28 Combination Antenna Coupler ...... W3WPV 30 The Minute Motor ...... W3WPV 36 Filament Transformer Conversion ...... W5VOH 40 144 MHz Nuvistor Converter ...... W9DUT 44 The Portable...
Topics: watts, power, antenna, meter, receiver, frequency, crystal, transmitter, supply, output, power...
73 Magazine (Amateur Radio Today)
Sep 1, 1963
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73 Magazine September 1963 (#36) Cast Iron Balun - Using ferrite core inductors. 73 parts kit available ...... W4WKM 8 CW Noise Limiter - Or have you noticed that your noise limiter turns off on CW? ...... W6SFM 10 Errorless RTTY Converter - Well, almost errorless ...... K5JKX 12 Bourbon S-Meter - As contrasted with the more popular Scotch S-Meters. Parts kit on this ...... W6TKA 18 Cartoon - Har de har ...... Rodgers 20 Towers - Compendium ...... K1APA 22 VHF Receiver - Module type...
Topics: frequency, meter, receiver, rec, antenna, power, tlie, cavity, tuning, xmtr, power supply, front...
73 Magazine (Amateur Radio Today)
Aug 1, 1963
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73 Magazine August 1963 (#35) Dry Cell Rigs - QRP mountaintop special for six meters ...... K1CLL 8 Diode Noise Generator - 73 kit. Zener diode voltage regulated job ...... K9ONT 15 Video Modulation - For the ham-TV contingent ...... W8VCO 16 Magic T-R - Best Tee-R yet for VHF with no loss of sensitivity ...... K5JKX 20 Saturn 6 - Soup up your halo with this tuning method ...... K5LPE 22 Utopia Break-In - Hear through your own sending and keep track of the frequency ...... W4MLE 24 Practical...
Topics: antenna, receiver, meter, transmitter, vertical, amateur, xmtr, vhf, vee, ham, vertical antenna,...
73 Magazine (Amateur Radio Today)
Jul 1, 1963
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73 Magazine July 1963 (#34) Sizzling Six - Super sensitive six meter converter. Kit available ...... W9DUT 8 Chemical City TU - One of the best RTTY converters to come along so far ...... K8IQJ 14 Low-Ebb in the Sunspot Cycle - "Humph, that's science fiction" said Tom astoundingly ...... K2TKN 17 Two-Banding the Swan One Bander - Cinch ...... W8DZH 18 Six Meter Transmitter - 2E26 output. Kit available on terrific tuning-indicator ...... K6GKU 22 Two Meter Antenna Coupler and SWR...
Topics: meter, quad, antenna, power, circuit, transmitter, ham, amateur, output, audio, single tone,...
73 Magazine (Amateur Radio Today)
Jun 1, 1963
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73 Magazine June 1963 (#33) Instant 220 - The AN/DMQ-2 is a snap to put on 220 ...... W2TQS 8 More Selectivity for the RT-91/ARC-2 - Great transceiver, covers 40-80 ...... W6BJI 11 PE-97A? What's That? - 12V in, 250V @ 100 mA out. Just right for Two'er, etc ...... W4DWU 14 Bandspreading the BC-348 - Curing one of the few drawbacks of this great surplus receiver ......W5EUL 18 Lazy Man's Coil Evaluator - Nice little piece of test gear you'll want to build. 73 kit ...... W0QWY 20 Converting the...
Topics: antenna, meter, power, tlie, coil, transmitter, receiver, tuning, ohm, tubes, power supply, front...
73 Magazine (Amateur Radio Today)
May 1, 1963
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73 Magazine May 1963 (#32) Six Meter Transceiver - Cute little five transistor hand-held unit. Parts kit available ...... K3NHI 8 6DJ8/ECC88 Converter - Six meters down to 14 MHz using really hot front-end tube ...... WA2HVK 11 Simple T-R Switch - For the CW man who wants full break-in without TVI ...... W4MLE 12 All-Band Linear Kilowatt - Using the new Amperex 8179 you've been reading-about ...... W2LPC 16 Reducing Receiver Noise - Read this one, it is really important... No kidding .........
Topics: power, antenna, output, meter, circuit, amplifier, plate, receiver, audio, swr, power supply, plate...
73 Magazine (Amateur Radio Today)
Apr 1, 1963
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73 Magazine April 1963 (#31) Adjustable Regulated Power Supply - Playing around with transistors? Then have: one of these ...... W1ISI 8 Diode Noise Generator - Simple test instrument to tune up converters, receivers and stuff ...... Thomas 15 Selected Circuits - Polar relay test set great for the RTTY group ...... W4WKM 18 Decibles - What they are, how to use 'em, complete with a monograph ...... K1MRK 21 Vector VFO - Simple, stable oscillator for 80 meters. Great for DX-60 and the like .........
Topics: power, antenna, meter, watts, sideband, receiver, frequency, voltage, radio, output, los angeles,...
73 Magazine (Amateur Radio Today)
Mar 1, 1963
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73 Magazine March 1963 (#30) Two Meter Pre-Amp - Two nuvistors, built by a perfectionist ...... W9DUT 8 Portable Ragchewer - Low-power rig and small receiver. Eminently portable ...... K6LJY 14 Infinite Impedance Match - New type of matching system for beams. Looks good ...... W6NAT 20 QRP Transmitter - 1S4 peanut whistle ...... W1MEL 22 Let's Regulate - Voltage regulated power supplies for transistor circuits and filaments ...... W2RWJ 24 Amateur TV Transmitter - 432 MHz rig with 832A in final...
Topics: amateur, antenna, crystal, receiver, frequency, ohm, tubes, watts, power, audio, amateur net, power...
73 Magazine (Amateur Radio Today)
Feb 1, 1963
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73 Magazine February 1963 (#29) 6M SSB - Pros, cons, and the gear to do it with ...... W2NSD 10 432 MHz Gallon - Legal now ...... K2TKN 14 Mountain Topping for Blood - An old pro doesn't answer ones ...... K1CLL 20 Simplified 8JK Beams - The twin-three really puts out a signal. Really ...... W6WAW 24 Double Sideband - DSB has some decided advantages, you might as well read this and face it ...... W3PHL 28 Crystal Oscillator - How to get the stability required for moonbounce on 1296. It ain't...
Topics: power, output, sideband, watts, meter, receiver, antenna, ssb, transmitter, audio, power supply,...
73 Magazine (Amateur Radio Today)
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73 Magazine January 1963 (#28) Nu 1-1/4 Meter Converter - Three 6CW4 nuvistors in a sensitive 220 MHz converter ...... WA2INM 6 RF Controlled Break-In - Automatic send-receive controlled by the key ...... W8MQW 8 NTSC Signal for Ham TV - Ham-TV'ers will want to read this one ...... K2HQY 10 73 Tests the WRL Tech-ceiver - Works fine. Six meter transceiver ...... Staff 18 Linear Amplifier - 3-1000Z kilowatt ...... W6JAT 20 73 Reviews the PMR-8 - Fine little mobile receiver by Elmac ...... W6FNG...
Topics: oct, meter, apr, dec, jun, nov, feb, sep, jul, power supply, grid dip, low noise, amateur radio,...
73 Magazine (Amateur Radio Today)
Dec 1, 1962
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73 Magazine December 1962 (#27) Two Meter VFO - Very stable and uses one tube. Dandy bandspread ...... W6TKA 6 Modifying the Sixer - For a 50% power increase ...... K4ZQQ 9 Modifying the HE-45 - Improving the modulation & power output meter for this nice rig ...... WA2INM 10 The Irving Hiverter 50 - Six meter SSB converter tested at HQ by W1MEL. Works ...... Staff 12 Alternators - With mobile SSB coming at us in a rush we will be needing these ...... K8ERV 16 432 MHz Antenna Tuner -...
Topics: receiver, meter, radio, voltage, ssb, power, circuit, tlie, amateur, transmitter, mfd capacitor,...
73 Magazine (Amateur Radio Today)
Nov 1, 1962
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73 Magazine November 1962 (#26) Solid State 1296 MHz Converter - Transistors on 1296? Good grief, what next? Sensitive too! ...... W3HIX 6 Deluxe Your Transceiver - The Lafayette HE-35A, for example. S-meter, spotting switch, etc ...... K6UGT 10 Junction Cheks - Quick way of making sure the junctions are still good onyour transistors ...... K2OPI 16 The Continental Six - Six meters SSB with this low-cost high performance transmitting converter ...... W1PYM 18 Build Your Own Mobile Mike -...
Topics: circuit, meter, voltage, tlie, frequency, tuning, diode, receiver, signal, antenna, power supply,...
73 Magazine (Amateur Radio Today)
Oct 1, 1962
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73 Magazine October 1962 (#25) VHF'ing with the Standard Coil Tuner - The cheapest really hot VHF converter yet published ...... W4WKM 6 50 Watts on 50 MHz in 50 Seconds - Starting with the Heath DX-20 ...... K9STH 10 20 Meter SSB Exciter - Completely transistorized to boot ...... W5FRC 12 Four Layer Semi-conductors - Self completing automatic bug and other adventures of these new gadgets ...... K8AOE 16 Improved Base Clipper - Eliminates all signals below a given adjustable amplitude .........
Topics: voltage, frequency, meter, circuit, antenna, power, amateur, output, receiver, grid, power supply,...
73 Magazine (Amateur Radio Today)
Sep 1, 1962
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73 Magazine September 1962 (#24) Synchronous Detection - A breakthrough article reading signals 40 dB down in the noise ...... K2TKN 6 73 Tests the Maverick Filter - Really picks off those six meter Indians ...... WA2INM 10 What's a Vidicon? - It is the amateur's answer to live TV ...... W2RWJ 12 Twin-Cavity Two Meter Filter - It's what's up front that counts. A thinking man's filter ...... W3TUZ 18 Treasures From the Junk Yard - Car radios can be easily converted to 110 VAC ...... W5VOH 22...
Topics: meter, tlie, signal, receiver, grid, frequency, amateur, antenna, ssb, band, power supply, front...
73 Magazine (Amateur Radio Today)
Aug 1, 1962
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73 Magazine August 1962 (#23) Coaxial Line UHF Pre-Amp - 420 MHz Nuvtstor pre-amplifier, pretty important at these frequencies ...... W9SEK 6 Improving the CC50 - Blow the dust off and bring it up to date ...... WA2INM 7 VHF with RDR - Navy surplus conversion. Covers 220 MHz band rather well ...... W2VCG, W2TAM 8 Six Meter Coaxial Antenna - Not for DX'ing, but it is simple, inexpensive and omnidirectional ...... W6KVO 12 The UNI - Code practice oscillator ...... W2VSP 14 More on Crystal...
Topics: meter, circuit, receiver, crystal, transmitter, antenna, voltage, grid, frequency, tlie, power...
73 Magazine (Amateur Radio Today)
Jul 1, 1962
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73 Magazine July 1962 (#22) The 420 MHz Band - Inside dope on this interesting band by real expert ...... W4HHK 6 Six Meter Nuvistor Converter - Designed to plug in Drake receiver, but will work with anything ...... K8NIC/5 12 VHF Construction - Heed well this article and you may save yourself a lot of misery ...... WA2INM 14 The Eico 720 on Six Meters - You just add a separate pi-net coupler and there you are ...... WA2KTJ 18 Finding True North - Handy if you are lost in the woods ...... KH6BW...
Topics: frequency, meter, antenna, circuit, receiver, amateur, grid, power, oscillator, tlie, power supply,...
73 Magazine (Amateur Radio Today)
Jun 1, 1962
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73 Magazine June 1962 (#21) Echo Deluxe - Two meter transmitter with a commercial appearance ...... W9DUT 6 The Friendly Frequency - 52.525 MHz ...... W9YCB 14 Six and Two Meter Nuvistor Pre-Amplifiers - Pre-amplifiers are easier to build than converters ...... K9ARA 16 Milliwatt RF Power Measurements - For those low power transistor rigs and transceivers ...... K4UWX 18 Noise Limiter for the NC-300 - Rate-of-change type limiter ...... W8IQN 20 Six Meter Transistor Converter - Runs directly...
Topics: meter, antenna, receiver, power, frequency, output, noise, resistor, voltage, circuit, power...
73 Magazine (Amateur Radio Today)
May 1, 1962
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73 Magazine May 1962 (#20) Two Meter Tank and Coupler - Part 1 on a marvelous two meter rig ...... W9DUT 6 Simple Antenna Mast - 22 feet for $4.00 ...... K3LTB/5 8 6M Double-Sideband AM Transmitter - Uses circuit board. Whole bunch of fellows are getting on with this simple rig ...... K8AOE, K8MSB 10 Two'er Modifications - AC/DC power supply, new osc. circuit. Applicable to 10'er & 6'er too ...... K2ORY 16 73 Tests the Telco 201 Converter - This six meter nuvistor converter is amazing...
Topics: meter, circuit, antenna, receiver, voltage, hallicrafters, output, coil, capacitor, plate, power...
73 Magazine (Amateur Radio Today)
Apr 1, 1962
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73 Magazine April 1962 (#19) Six Meter SSB Exciter/Transmitter - Since sideband is going to be the big thing on 6, you'd better start soldering ...... W5JSN/K8NIC 6 Field Strength Meter for Ten and Six - Using a midget loaded whip to improve the sensitivity of your F.S.M ...... W3YZC 9 Forty Meter ZL Special - As the sunspots go, so go the higher bands. Try this 40M amplifier ...... W4AXE 10 73 Tests the Poly-Comm 62B - Pollytronics has really done it: Six and two in one li'l package .........
Topics: antenna, meter, voltage, frequency, receiver, amateur, circuit, coil, output, signal, power supply,...
73 Magazine (Amateur Radio Today)
Mar 1, 1962
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73 Magazine March 1962 (#18) Printed Circuit VFO - Extreme stability and simplicity of construction in this 50 MHz VFO may bug you to build ...... W5UB 6 Regulated Bias Supply - Great for linears, develops -20 to -120V @ 0-70 mA and presents only 6 ohms to grid ...... W5IUR 12 Check Transistors with an Ohmmeter - Here is the simplest test for transistors yet, and it's safe and works ...... W9QKC 14 Radar Detector - All you 2,500 MHz SWL's (UNFL's?) will appreciate this mobile receiver .........
Topics: antenna, frequency, meter, circuit, output, power, modulation, signal, receiver, pulse, power...
73 Magazine (Amateur Radio Today)
Feb 1, 1962
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73 Magazine February 1962 (#17) V-Loop Beam - Angie claims this thing works out. Looks easy to build, give it a try ...... W2NQS 8 Final Tanks - It's about time someone did a through job on this subject. Technical article ...... W6JAT 12 Converting 6 Volt Radios to 12 Volts - Basic conversion for car radios, Motorola, and link transceivers, etc ...... W4OHM 20 RX for the RTTY Bug - Nice TT converter, complete with scope ...... W0RQF 26 A Page from a Designer's Notebook - Heising modulator...
Topics: frequency, meter, antenna, output, coil, amateur, circuit, ssb, power, tuning, power supply,...
73 Magazine (Amateur Radio Today)
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73 Magazine January 1962 (#16) Kilowatt Sideband Transceiver - Single band rig, but amazingly compact ...... W6JAT 8 Rotate That Tower - Instead of just the antenna ...... K2LZF 14 73 Tests the Alco GDO - It works fine ...... W4WKM 18 Rotors - Why TV rotors usually fail as beam twirlers ...... K2TKN 20 Speakers for Command Sets - Making use of midget speakers for built-in sound on the ARC-5 receivers ...... W4WKM 24 Chase That Dampness - Cure the number one blight to good radio equipment .........
Topics: meter, receiver, nov, oct, transistor, antenna, dec, frequency, amateur, ham, power supply, grid...
73 Magazine (Amateur Radio Today)
Dec 1, 1961
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73 Magazine December 1961 (#15) Write Your Congressman - Making a pest out of yourself in a big way ...... K7HDB 6 Ten Meter Midget Rig ...... K5JKX/6 8 Versatilizing Meters ...... W2WYM 12 Regenative Detectors ...... W5WGF 16 Another Two Meter Conversion - Conversion of the R-77/ARC-3 Receiver provides continuous coverage from 100 to 156 mc, without undue sacrifice of 2 meter bandspread ...... W4WKM 22 Economical Custom Construction - Sturdy, professional appearing custom equipment housing...
Topics: meter, antenna, receiver, amateur, tuning, voltage, ham, transmitter, aluminum, calibration, power...
73 Magazine (Amateur Radio Today)
Nov 1, 1961
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73 Magazine November 1961 (#14) Linear for Sunspot Lows - Do-it-yourself F2 layer. A kilowatt six meter linear for SSB ...... K6QQN & W6QMN 6 Transistor Mike Pre-Amplifier - Outboard pre-amp to make up for audio deficiencies of your rig ...... K6PZT 10 Transistorized RTTY Audio Oscillator - Printed circuit, generates mark and space tones for RTTY ...... W5SFT 12 Have You Met These Characters - TVI brings out some remarkable characters ...... K3HNP 15 TV Tuner Receiver - The standard coil...
Topics: frequency, oscillator, antenna, receiver, coil, audio, amateur, tuning, meter, circuit, power...
73 Magazine (Amateur Radio Today)
Oct 1, 1961
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73 Magazine October 1961 (#13) Six Meter Linear Amplifier - 90 watts AM, 360 watts PEP SSB, 2-1/2 watts drive to pair 7378s ...... W2LPC 6 Simple High Stability, VFO - 5763 osc., 5763 buffer. Colpitts circuit ...... W2RWJ 14 73 Tests the Central 200V - It works ...... Staff 18 CQ de 73 - Converting the ARA-26 surplus keyer for ham work. Inexpensive, and lots of fun ...... W2WKM 22 Like New Mixer Circuit - New way to improve sensitivity and stability of your receiver ...... Staff 32 Two Meters...
Topics: circuit, antenna, tube, transmitter, frequency, oscillator, meter, vfo, amplifier, output, power...
73 Magazine (Amateur Radio Today)
Sep 1, 1961
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73 Magazine September 1961 (#12) Silicon Rectifiers - How not to pop 'em, a lesson for hams and engineers alike ...... W1OOP 6 Tuning Bypass Condensers - How to make a bypass bypass at the VHF's ...... K5JKX/6 8 Simplescope - Perchance the title may give this one away. You need one. Build it ...... W0OPA 10 VFO Chirp vs. 6AU6 - Several VFO's use a 6AU6. Lousy choice, try a 6AH6 instead and see ...... K3KMO 20 Console - If you're going to be obstinate enough not to buy an Alden Hambench, then...
Topics: circuit, frequency, crystal, transmitter, power, receiver, ham, antenna, oscillator, voltage, power...
73 Magazine (Amateur Radio Today)
Aug 1, 1961
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73 Magazine August 1961 (#11) Frequency Deviation Meter - Another little garget to build from the brain of one of the top hams of all time ...... K6BJ 6 Noise Limiter - For the car. Transistorized, printed circuited, and the board is available ...... W3BUL 8 SSB vs. AM - Year-by-year count of band occupancy by SSB and AM. (SSB is winning) ...... K0AXY 12 Square Antenna - The Bi-Square is easy to build and works out beautifully ...... W8GUE/6 14 The Drake Receiver - 73 rushes you info out the...
Topics: antenna, frequency, circuit, meter, receiver, ham, transistor, meters, signal, ssb, printed...
73 Magazine (Amateur Radio Today)
Jul 1, 1961
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73 Magazine July 1961 (#10) A Tinker-Toy for Two - Two meter antennas made out of aluminum tubing and a Tinker-Toy set ...... K8LFI 8 Ready-Made Emergency Antenna - New, improved type mobile antenna. Really works out! ...... W7CSD 12 Two Meter Line Amplifier - Nuvistor pre-amplifier -for hottening up your two meter converter ...... Bullock 14 Amplitude Modulation Systems - Review of AM systems with special reference to an oldie you'll like ...... W7CSD 18 Globular Calculations - How to find out...
Topics: voltage, meter, modulation, antenna, circuit, tube, signal, receiver, frequency, power, power...
73 Magazine (Amateur Radio Today)
Jun 1, 1961
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73 Magazine June 1961 (#9) Abe Lincoln - Two meter antenna for mobile or fixed. Looks awful, works great! ...... K2TKN 8 75M Transistorized Converter - Nice little one evening construction project ...... WA6DZL 12 Precision Capacity Measuring - Right down to a fraction of a pF ...... K6BJ 14 Propagation, Part 2 - When the sunspot null will really come and what it will be like ...... K2IGY 16 73 Tests the M-100 Modulator - Just how good is that gate modulator put out by Electrotone? ...... W4API...
Topics: circuit, voltage, frequency, receiver, power, meter, output, amateur, radio, antenna, power supply,...
73 Magazine (Amateur Radio Today)
May 1, 1961
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73 Magazine May 1961 (#8) G4 Zed Smith - A tri-bander without loading coils or traps, can be tuned from the shack! ...... W8VVD 9 Feedline Economy - Open-wire line just may become popular again after you read this one ...... W9HOV 18 Propagation Special Feature - Taking a look at sunspot numbers with an eye to predictions ...... K2IGY 20 Testing the KT-200 Receiver - Next month we have some of Bill Orr's ideas for modifying this receiver ...... K2DHA 22 Ham Calendar - Just what we've been...
Topics: meter, output, audio, frequency, antenna, ham, tuning, receiver, power, power supply, carbon film,...
73 Magazine (Amateur Radio Today)
Apr 1, 1961
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73 Magazine April 1961 (#7) Six Meter Nuvistor Converter - Two 6CW4's in cascade give a fearfully low noise figure ...... K8BYN 9 Power Meter - Another valuable piece of test gear for the ham shack ...... K8ERV 12 Surge Protection in Reverse - Protect your silicon diode power supply from destruction by shorting ...... Pafenberg 13 Let's Modulate, Not Crepitate - Getting good modulation out of a Heising Modulator ...... K4ZGM 14 A New Noise Limiter - Get out the soldering iron, this one'll go in...
Topics: meter, circuit, output, frequency, power, receiver, grid, audio, plate, amplifier, final amplifier,...
73 Magazine (Amateur Radio Today)
Mar 1, 1961
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73 Magazine March 1961 (#6) Translating Technical Journals - You'll read this one to anyone who will listen ...... K5JKX/6 9 Transistorized Grid Dip Oscillator - Severing the AC umbilical cord with a transistor ...... W3KET 10 Curing Ignition Interference - Step-by-step assassination of the noisy car gremlins ...... W8UCG 13 Superregenrative Receivers - Ten rules for getting good results from a super-regen illustrated ...... W5WGF 14 Decreasing Debugging Time - How to get things back east when...
Topics: receiver, meter, transmitter, circuit, antenna, ham, magazine, amplifier, coil, radio, magazine...
73 Magazine (Amateur Radio Today)
Feb 1, 1961
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73 Magazine February 1961 (#5) Rolling Your Own - We're determined that you're going to build something ...... K5JKX/6 11 Amplifier for Varicap Modulator - More for gain for the modulator in our October issue ...... W7CSD 16 World's Simplest Phone Patch - Average construction time: five minutes ...... K5JKX/6 17 Two Meter Pip-Squeak - Complete phone rig using only three 6CX8's ...... K6BP 18 Squawk - Guaranteed Houser. We should needle Ken into writing more like this ...... W7IDF 20 Six Meter...
Topics: circuit, meter, magazine, antenna, frequency, ham, ssb, tube, february, amateur, magazine february,...
73 Magazine (Amateur Radio Today)
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73 Magazine January 1961 (#4) Nuvistor Converters for Six and Two - 417A performance without 417A cost ...... K8ERV 8 Down With Drift - Step-by-step stabilization of your receiver ...... K5JKX/6 12 6N2 Completed - Eico, Heath, and Johnson kits add up to 100 watts on Six and Two ...... W3UZN 14 1296 MHz - Secret confessions of an UHF addict ...... K2TKN 16 Goblin Patrol - Hams team up with cops to louse up Halloween for the kids ...... W8UCY 18 Lost in a Tunnel - Pioneering frustrations of a...
Topics: circuit, frequency, receiver, magazine, oscillator, detector, diode, signal, tube, january,...
73 Magazine (Amateur Radio Today)
Dec 1, 1960
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73 Magazine December 1960 (#3) Transistorized 220 MHz Converter - Crystal controlled too ...... W3HIX 8 RF Sniffer - Snooper sensitive RF detector which you will build ...... K5JKX/6 11 SSB Dynamic Demonstrator - Teaching SSB calls for some tricky stratagems ...... W2UQB 12 Capacity Meter - Two ranges : 0-40 pF (resolves 1 pF) and 0-900 pF ...... K8ERV 14 Station Control System - Even if you don't build this one it will give you ideas ...... W1TUW 16 The Multivibrator in VOX Circuitry -...
Topics: circuit, relay, voltage, frequency, receiver, squelch, oscillator, signal, meter, transistor, power...
73 Magazine (Amateur Radio Today)
Nov 1, 1960
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73 Magazine November 1960 (#2) Transistorized 10 Meter Converter - Not only that, but it uses a printed circuit you can make ...... W3BUL 9 Four Band Crystal Converter - 20-15-10-6 meters using the new International Crystal converters ...... W3UZN 12 FM VFO Exciter - Butchered BC-459 for 6 and 2 meter FM or NFM operation ...... W1TUW 14 Mobile Power - How to put some beef into that mobile signal ...... K5JKX/6 16 Cardboard Chassis - Building on the kitchen table... How easy can we make it?...
Topics: circuit, signal, receiver, amateur, meter, limiter, frequency, antenna, tube, ham, power supply,...
73 Magazine (Amateur Radio Today)
Oct 1, 1960
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73 Magazine October 1960 (#1) Audio Booster - A three transistor amplifier that hooks across the mike to give you more talk power for SSB or AM without distortion ...... K5JKX/6 Something New in FM - Using the new varicap as a FM modulator ...... W7CSD 10 Bantam Converters - Two-tube VHF converters for 50-108-144-152-220 MHz bands ...... W9DUT 12 Risky Hobby - How to fall off your tower for fun and profit ...... K9AMD 16 Tubeless Electronic Key - Just uses some relays. Also tells how to convert...
Topics: amateur, power, voltage, audio, radio, modulation, receiver, ham, meter, frequency, amateur radio,...
73 Magazine (Amateur Radio Today)
- Wayne Green
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73 Magazine (Holiday Issue 1976) (#195) Build This Inexpensive 400 Watt Amplifier - a pair of shoes never hurts W7SCD How Do You Use ICs? - part V WA2SUT/ NNN0ZVB Mobile Smokey Detector - 10.5 GHz:use it or lose it W1SNN Get a Kid Off the Streets - and in to ham radio WA1GFJ Add RIT to Your Transceiver - a must for CW operators Staff Coronaries for Burglars - with this cheapo car alarm WB60DS Power Supply - versatile WB4EHG DXpedition : Memories for a Lifetime - reflections of HKITL K3JJZ...
Topic: amateur radio ham magazine pdf